3638873500 has 48 divisors (see below), whose sum is σ = 8000096832. Its totient is φ = 1445880000.

The previous prime is 3638873473. The next prime is 3638873501. The reversal of 3638873500 is 53788363.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3638873501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51402 + ... + 99598.

It is an arithmetic number, because the mean of its divisors is an integer number (166668684).

Almost surely, 2^3638873500 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3638873500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4000048416).

3638873500 is an abundant number, since it is smaller than the sum of its proper divisors (4361223332).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3638873500 is a wasteful number, since it uses less digits than its factorization.

3638873500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48367 (or 48355 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 43.

The square root of 3638873500 is about 60323.0760157338. The cubic root of 3638873500 is about 1538.1156324571.

The spelling of 3638873500 in words is "three billion, six hundred thirty-eight million, eight hundred seventy-three thousand, five hundred".